
@mixin transition($transition){
  transition: $transition;
  -moz-transition: $transition;
  -webkit-transition: $transition;
  -o-transition: $transition;
  -ms-transition: $transition;
}

@mixin transform-origin($origin){
  transform-origin: $origin ;
  -moz-transform-origin: $origin ;
  -webkit-transform-origin: $origin ;
  -o-transform-origin: $origin ;
  -ms-transform-origin: $origin ;

}

@mixin scale($scale){
  transform: scale($scale) ;
  -moz-transform: scale($scale) ;
  -webkit-transform: scale($scale) ;
  -o-transform: scale($scale) ;
  -ms-transform: scale($scale) ;
}

@mixin opacity($opacity){
  opacity: $opacity;
  filter: alpha(opacity=$opacity*100);
}